OFFSET
0,3
COMMENTS
This substitution was suggested by looking at output of the symbols of an actual Kenyon border tiling program.
LINKS
MATHEMATICA
s[n_] := n /. {1 -> 2, 2 -> 3, 3 -> {3, 3, 5, 4}, 4 -> 5, 5 -> 6, 6 -> {6, 6, 2, 1}}; t[a_] := Join[a, Flatten[s /@ a]]; Flatten[ NestList[t, {1}, 5]]
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Roger L. Bagula, Apr 02 2005
STATUS
approved